DC CONDUCTIVITY OF SOL-GEL DERIVED GLASSES IN THE SYSTEM FE2O3-SIO2

被引：0

作者：

BRAHMA, P ^{[1
]}

CHAKRAVORTY, D ^{[1
]}

MITRA, S ^{[1
]}

机构：

[1] GURUDAS COLL,CALCUTTA 700054,INDIA

来源：

EUROPEAN JOURNAL OF SOLID STATE AND INORGANIC CHEMISTRY | 1991年 / 28卷 / 05期

关键词：

D O I：

暂无

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Glasses in the series x Fe2 O3.(1-x) SiO2 with 0.01 < x < 0.1 have been prepared by sol-gel technique. DC resistivity of these glasses have been investigated over the temperature range 300 to 600K. The temperature variation of resistivity is explained on the basis of a small polaron hopping conduction mechanism, the Fe2+ and Fe3+ ions acting as the hopping sites. The high temperature data have been analysed by both the T-1/4 and T-2/5 law respectively as formulated by Triberis and Friedman. The density of localised states is calculated to be in the range 10(19)-10(20) eV-1 Cm-3.

引用

页码：1139 / 1150

页数：12

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